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    <title>arma2p</title>
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    <center>Scilab Function</center>
    <div align="right">Last update : April 1993</div>
    <p>
      <b>arma2p</b> -  extract polynomial matrices from ar representation</p>
    <h3>
      <font color="blue">Calling Sequence</font>
    </h3>
    <dl>
      <dd>
        <tt>[A,B,D]=arma2p(ar)  </tt>
      </dd>
    </dl>
    <h3>
      <font color="blue">Parameters</font>
    </h3>
    <ul>
      <li>
        <tt>
          <b>A,B,D</b>
        </tt>: three polynomial matrices</li>
      <li>
        <tt>
          <b>ar</b>
        </tt>: Scilab 'ar' tlist for arma storage (see <tt>
          <b>armac</b>
        </tt>).</li>
    </ul>
    <h3>
      <font color="blue">Description</font>
    </h3>
    <p>
    this function extract polynomial matrices <tt>
        <b>(A,B,D)</b>
      </tt> from an armax
    description.</p>
    <h3>
      <font color="blue">Examples</font>
    </h3>
    <pre>

a=[1,-2.851,2.717,-0.865].*.eye(2,2)
b=[0,1,1,1].*.[1;1];
d=[1,0.7,0.2].*.eye(2,2);
sig=eye(2,2);
ar=armac(a,b,d,2,1,sig)
// extract polynomial matrices from ar representation 
[A,B,D]=arma2p(ar);
 
  </pre>
    <h3>
      <font color="blue">See Also</font>
    </h3>
    <p>
      <a href="arma.htm">
        <tt>
          <b>arma</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="armax.htm">
        <tt>
          <b>armax</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="armax1.htm">
        <tt>
          <b>armax1</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="arsimul.htm">
        <tt>
          <b>arsimul</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="armac.htm">
        <tt>
          <b>armac</b>
        </tt>
      </a>,&nbsp;&nbsp;</p>
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